1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.documentsui.prefs; 18 19 import android.content.SharedPreferences; 20 import android.support.test.InstrumentationRegistry; 21 import android.support.test.filters.SmallTest; 22 import android.support.test.runner.AndroidJUnit4; 23 24 import com.android.documentsui.testing.TestConsumer; 25 26 import org.junit.After; 27 import org.junit.Before; 28 import org.junit.Test; 29 import org.junit.runner.RunWith; 30 31 import java.util.concurrent.TimeUnit; 32 33 @RunWith(AndroidJUnit4.class) 34 @SmallTest 35 public class PreferencesMonitorTest { 36 37 private SharedPreferences mPrefs; 38 private PreferencesMonitor mMonitor; 39 private TestConsumer<String> mConsumer; 40 41 @Before setUp()42 public void setUp() { 43 mConsumer = new TestConsumer<>(); 44 mPrefs = InstrumentationRegistry.getContext().getSharedPreferences("MonitorTest0", 0); 45 mMonitor = new PreferencesMonitor("Poodles", mPrefs, mConsumer); 46 mMonitor.start(); 47 } 48 49 @After tearDown()50 public void tearDown() { 51 mMonitor.stop(); 52 } 53 54 @Test testReportsChangesToListener()55 public void testReportsChangesToListener() throws Exception { 56 mPrefs.edit().putBoolean(ScopedPreferences.INCLUDE_DEVICE_ROOT, true).apply(); 57 // internally the monitor waits for notification of changes. 58 mConsumer.waitForCall(100, TimeUnit.MILLISECONDS); 59 mConsumer.assertLastArgument(ScopedPreferences.INCLUDE_DEVICE_ROOT); 60 } 61 } 62